KR200233193Y1 - Bushing terminal for transformer - Google Patents

Abstract

The present invention relates to a bushing terminal for a transformer, and provides a bushing terminal for a transformer that can prevent an electric shock accident and a power failure due to exposure of a bushing terminal portion to which a wire is fastened to the transformer. That is, the present invention is a bushing terminal for a transformer electrically connecting the insulator and the electric wire, the bushing body of a synthetic resin having an upper surface and a lower surface opposite to the upper surface, and penetrates the center of the upper and lower surfaces. A bushing body having a first insertion hole and having a second insertion hole connected to the first insertion hole at an outer circumferential surface so as to insert the electric wire into the first insertion hole through an outer circumferential surface; A female screw inserted into the first insertion hole and fixed to the female screw, wherein the first fastening hole is formed at a predetermined depth at an upper portion thereof and the second fastening hole is formed at a predetermined depth at a lower portion thereof. A female screw having a third insertion hole in communication with the second fastening hole so that the copper wire of the electric wire can be inserted; A male screw fastened to the first fastening hole of the female screw through an upper surface of the bushing body, the male screw fixing the copper wire of the electric wire inserted into the third insertion hole through the second insertion hole; And a cover of a synthetic resin covering an upper end of the bushing body to which the male screw is fastened, wherein the insulator is fastened to the second fastening hole of the female screw exposed to the lower surface of the bushing body. Provide a terminal. Therefore, since the copper wire of the electric wire, the female thread and the male thread which electrically connect the copper wire and the insulator of the electric wire are protected by the insulating bushing body and the cover, it is possible to prevent an electric shock accident and an electrostatic accident due to the electric shock accident.

Description

Bushing terminal for transformer

The present invention relates to a bushing terminal for a transformer, and more particularly, to a bushing terminal for a transformer that can prevent an electric shock accident and resulting power failure due to the external portion of the bushing terminal to which the wire is fastened to the transformer.

Bushing terminal 10 installed in a conventional transformer, as shown in Figure 1, has a structure that can be fixed to the copper wire 52 of the wire 50 by a metal material. That is, the wire 50 exposed by the copper wire 52 having a predetermined length is inserted into the clamp terminal 13 and the clamp stricture 15, and then the clamp stricture 15 is coupled to the clamp terminal 13 to connect the copper wire. (52) is fixed between the clamp terminal 13 and the clamp stricture 15. At this time, the washer 14 and the nut 16 are fastened so that the clamp throttle 15 can be coupled to the clamp terminal 13. Reference numeral 17 is a part fastened to the insulator of the transformer and electrically connected.

On the other hand, the bushing terminal 10 is fastened to the insulator installed on the top of the transformer is electrically connected. Thus, the bushing terminal 10 is made of a metal material capable of electrically connecting the insulator and the wire 50.

However, since the conventional bushing terminal 10 that is energized is exposed to the outside, there is a risk of a safety accident such as an electric shock accident, in particular an electric shock caused by a current, and thus a power failure is generated.

Accordingly, it is an object of the present invention to provide a bushing terminal for a transformer that can prevent an electric shock accident.

1 is a perspective view showing a bushing terminal for a transformer according to the prior art,

Figure 2 is a perspective view showing a bushing terminal for a transformer according to the first embodiment of the present invention,

3 is a cross-sectional view showing a state in which a wire is fastened to the bushing terminal for a transformer of FIG.

4 is a perspective view showing a bushing terminal for a transformer according to a second embodiment of the present invention,

5 is a cross-sectional view illustrating a state in which wires are fastened to a bushing terminal for a transformer of FIG. 4.

Description of the main parts of the drawing

100, 200: bushing terminal 110, 210: bushing body

113, 213: first insertion hole 115, 223: second insertion hole

120, 220: female thread 123, 215: first fastening hole

125, 225: second fastening hole 127: third insertion hole

130, 230: Male thread 140, 240: Cover

227: third fastening hole 150, 250: electric wire

152, 252: copper wire 160, 260: transformer

170, 270: insulator

In order to achieve the above object, the present invention provides a bushing terminal for a transformer that can prevent the electric current of the bushing terminal is exposed to the outside to prevent an electric shock.

That is, the present invention is a bushing terminal for a transformer electrically connecting the insulator and the electric wire, the bushing body of a synthetic resin having an upper surface and a lower surface opposite to the upper surface, and penetrates the center of the upper and lower surfaces. A bushing body having a first insertion hole and having a second insertion hole connected to the first insertion hole at an outer circumferential surface so as to insert the electric wire into the first insertion hole through an outer circumferential surface; A female screw inserted into the first insertion hole and fixed to the female screw, wherein the first fastening hole is formed at a predetermined depth at an upper portion thereof and the second fastening hole is formed at a predetermined depth at a lower portion thereof. A female screw having a third insertion hole in communication with the second fastening hole so that the copper wire of the electric wire can be inserted; A male screw fastened to the first fastening hole of the female screw through an upper surface of the bushing body, the male screw fixing the copper wire of the electric wire inserted into the third insertion hole through the second insertion hole; And a cover of a synthetic resin covering an upper end of the bushing body to which the male screw is fastened.

Provides a bushing terminal for the transformer, characterized in that the insulator is fastened to the second fastening hole of the female screw exposed to the lower surface of the bushing body.

The present invention is also a bushing terminal for a transformer electrically connecting the insulator and the electric wire, the bushing body of a synthetic resin having an upper surface and a lower surface opposite to the upper surface, the first through and the center of the upper surface and the lower surface A bushing body having an insertion hole formed therein and having a first fastening hole connected to the first insertion hole at an outer circumferential surface thereof; A female screw inserted into the first insertion hole and fixed to the female screw, wherein a second insertion hole into which a copper wire of the wire can be inserted at a predetermined depth is formed at an upper portion thereof, and a female screw having a second fastening hole formed at a predetermined depth at a lower portion thereof. A female screw having a third fastening hole formed to communicate with the first fastening hole at an outer surface thereof; A male screw fastened to the third fastening hole through the first fastening hole, the male screw fixing a copper wire of the electric wire inserted into the second insertion hole of the female screw; And a cover of the synthetic resin which is inserted into the central portion and coupled to the upper end of the bushing body, the cover covering at least the outer peripheral surface portion of the bushing body to which the male screw is fastened.

Provides a bushing terminal for the transformer, characterized in that the insulator is fastened to the second fastening hole of the female screw exposed to the lower surface of the bushing body.

Hereinafter, with reference to the accompanying drawings will be described in detail an embodiment of the present invention.

2 is a combined perspective view showing a bushing terminal 100 for a transformer according to the first embodiment of the present invention. 3 is a cross-sectional view showing a state in which the wire 150 is fastened to the bushing terminal 100 for the transformer of FIG.

2 and 3, the bushing terminal 100 according to the first embodiment includes a bushing body 110 having an internal thread 120 embedded therein and an electric wire that is fastened to the internal thread 120 and inserted into the internal thread 120. The male screw 130 to fix the copper wire 152 and the male screw 130 is composed of a cover 140 to cover the fastened portion. In particular, in order to prevent an electric shock accident, the bushing body 110 and the cover 140 are made of an insulating synthetic resin.

The bushing body 110 made of synthetic resin has an upper surface and a lower surface opposite to the upper surface, and includes a first insertion hole through which a female screw 120 is inserted and fixed through a central portion of the upper surface and the lower surface ( 113) is formed. The second insertion hole 115 is formed in communication with the first insertion hole 113 on the outer circumferential surface so that the electric wire 150 can be inserted into the first insertion hole 113 through the outer circumferential surface of the bushing body 110. . At this time, since the wire 150 is introduced into the second insertion hole 115, the second insertion hole 115 is preferably formed to be at least larger than the diameter of the wire 150 to be inserted, more preferably is inserted It is preferable to form corresponding to the diameter of the electric wire 150.

The female screw 120 is installed in the bushing body 110 and is a medium for electrically connecting the insulator 170 and the electric wire 150 of the transformer, and is inserted / fixed into the first insertion hole 113 of the bushing body. The female screw 120 has a first fastening hole 123 formed at a predetermined depth so that the male screw 130 can be fastened to the upper end, and the second fastening hole has a predetermined depth to fasten the insulator 170 to the lower end. 125 is formed. In particular, the third insertion hole communicates with the first fastening hole 123 so that the copper wire 152 of the electric wire can be inserted into the portion of the female screw 120 having the first fastening hole 123 formed therein. 127 is formed. At this time, the third insertion hole 127 is close to the bottom surface of the first fastening hole 123 so that the male screw 130 can stably fix the copper wire 152 of the electric wire inserted into the third insertion hole 127. It is preferable to form it.

Meanwhile, the female screw 120 having the second fastening hole 125 is formed in the portion of the female screw 120 having the first fastening hole 123 so that the female screw 120 can be inserted / fixed into the first insertion hole 113. The outer diameter is formed larger than the portion, and the first insertion hole 113 is formed correspondingly. Alternatively, the jaw may be formed to protrude from the outer circumferential surface in the middle portion of the female screw 120. Particularly, in the first embodiment of the present invention, the outer surface of the female screw 120 has a hexagonal column shape so that the female screw 120 can be stably fixed after being inserted into the first insertion hole 113. Correspondingly, a first insertion hole 113 is formed. In the first embodiment of the present invention, the female screw 120 has a hexagonal column shape, but may be formed as a polygonal column or more than a triangular column.

The male screw 130 is fastened to the first fastening hole 123 of the female thread through the upper surface of the bushing body 110 and inserted into the third insertion hole 127 of the female thread through the second insertion hole 115 of the bushing body. The copper wire 152 of the wire is fixed.

The cover 140 is coupled to the upper end of the bushing body 110 to which the male screw 130 is fastened to prevent an electric shock that may occur due to the external exposure of the male screw 130. At this time, the male thread 112 is formed on the outer circumferential surface of the upper end of the bushing body 110 so that the cover 140 can be coupled to the upper end of the bushing body 110, and the female circumferential surface of the cover 140 corresponds to the female. Thread 142 was formed. Alternatively, the cover 140 may be formed in a shape capable of fitting to the upper end of the bushing body 110.

Then, the insulator 170 of the transformer is fastened to the second fastening hole 125 of the female screw exposed to the lower surface of the bushing body 110.

Therefore, since the female screw 120 and the male screw 130 which electrically connect the wire 150 and the insulator 170 are protected by the insulating bushing body 110 and the cover 140, the electric shock accident and the electric shock accident are prevented. The power failure can be prevented.

Referring to the procedure of inserting / installing the wire 150 into the bushing terminal 100 according to the first embodiment, first, the bushing body 110 in which the female screw 120 is installed is coupled to the insulator 170 of the transformer. do. That is, the bushing body 110 is fixed by coupling the insulator 170 to the second fastening hole 125 of the female screw exposed to the lower surface of the bushing body 110. Next, the third insertion hole 127 of the female screw is pushed through the second insertion hole 115 of the bushing body through one end of the wire 150 having the copper wire 152 exposed thereto. Next, the male screw 130 is fastened to the first fastening hole 123 of the female thread to be inserted into the third insertion hole 127 to fix the copper wire 152 of the electric wire protruding into the first fastening hole 123. Finally, the cover 140 is coupled to the upper end of the bushing body 110 to cover a portion where the male screw 130 is fastened.

In the first embodiment of the present invention has been disclosed that the wire 150 is inserted / installed through the outer peripheral surface of the bushing body 110, the wire may be inserted / installed through the upper surface of the bushing body. That is, Figure 4 is a perspective view showing a transformer bushing terminal 200 according to a second embodiment of the present invention. 5 is a cross-sectional view showing a state in which the wire 250 is fastened to the bushing terminal 200 for the transformer of FIG.

4 and 5, the bushing terminal 200 according to the second embodiment has the same basic components as the bushing terminal 100 according to the first embodiment (100 of FIG. 2), but the insertion / The installed configuration is different. Of course, in order to prevent an electric shock, the bushing body 210 and the cover 240 is made of an insulating synthetic resin.

The bushing body 210 has an upper surface and a lower surface opposite to the upper surface, and has a first insertion hole 213 through which a female screw 220 is inserted and fixed through a central portion of the upper surface and the lower surface. It is. The first fastening hole 215 is formed in communication with the first insertion hole 213 on the outer circumferential surface so that the male screw 230 can protrude into the first insertion hole 213 through the outer circumferential surface.

The female screw 220 is installed in the bushing body 210 and is a medium for electrically connecting the insulator 270 and the electric wire 250 of the transformer and is inserted / fixed into the first insertion hole 213 of the bushing body. The female screw 220 has a second insertion hole 223 with a predetermined depth so that the copper wire 252 of the wire can be inserted into the upper end, and the second screw hole has a predetermined depth so that the insulator 270 can be fastened to the lower end thereof. The fastening hole 225 is formed. In particular, the third screwing hole (223) in communication with the second inserting hole (223) to allow the male screw 230 to be fastened through the first fastening hole (215) in the portion of the female screw 220 having the second inserting hole (223). 227 is formed. At this time, the third fastening hole 227 is close to the bottom surface of the second insertion hole 223 so that the male screw 230 can stably fix the copper wire 252 of the electric wire inserted into the second insertion hole 223. It is preferable to form it.

Meanwhile, the female screw 220 having the second fastening hole 225 has a portion of the female screw 220 having the second insertion hole 223 formed therein so that the female screw 220 can be inserted / fixed into the first insertion hole 213. The outer diameter is larger than the portion, and the first insertion hole 213 is formed correspondingly. Alternatively, the jaw may be formed to protrude from the outer circumferential surface in the middle portion of the female screw 220.

The male screw 230 is fastened to the third fastening hole 227 of the female thread through the first fastening hole 215 of the bushing body to fix the copper wire 252 of the wire inserted through the second insertion hole 223.

The cover 240 is coupled to the upper end of the bushing body 210 to cover the outer circumferential surface of the bushing body 210 to which the male screw 230 is fastened to prevent an electric shock that may occur due to the external exposure of the male screw 230 to the outside. . In the central portion of the cover 240, a fitting hole 243 is formed to fit the wire 250. At this time, the male thread 212 is formed on the outer circumferential surface of the upper end of the bushing body 210 so that the cover 240 can be coupled to the upper end of the bushing body 210, and the female 240 is formed on the inner circumferential surface of the cover 240 correspondingly. Thread 242 is formed. Alternatively, the cover 240 may be formed in a shape capable of fitting to the upper end of the bushing body 210.

In particular, the cover 240 is coupled to the first fastening hole 215 of the bushing body so that the end of the male screw 230 does not protrude out of the outer circumferential surface of the bushing body 210 so that the cover 240 can be stably coupled to the bushing body 210. It is desirable to. That is, it is preferable to use the male screw 215 having a length shorter than the length of the first fastening hole 215 so that the male screw 230 is inserted into the first fastening hole 215.

The insulator 270 is fastened to the second fastening hole 225 of the female screw exposed to the lower surface of the bushing body 210.

Therefore, since the female screw 22 and the male screw 230 which electrically connect the wire 250 and the insulator 270 are protected by the insulating bushing body 210 and the cover 240, the electric shock accident and the electric shock accident are prevented. The power failure can be prevented.

Referring to the procedure of inserting / installing the wire 250 into the bushing terminal 200 according to the second embodiment, the bushing body 210 in which the female screw 220 is internally installed is insulated from the transformer 260. ) That is, the insulator 270 is coupled to the second fastening hole 225 of the female screw exposed to the lower surface of the bushing body 210 to fix the bushing body 210. Next, the cover 240 is inserted into one end of the wire 250 where the copper wire 252 is exposed, and then the second insertion hole of the female thread is inserted into the copper wire 252 of the wire through the first insertion hole 213 of the bushing body. (223). Next, the male screw 230 is fastened to the third fastening hole 227 of the female thread through the first fastening hole 215 of the bushing body to fix the copper wire 252 of the wire exposed through the third fastening hole 227. . Finally, the cover 240 into which the wire 250 is fitted is coupled to the upper end of the bushing body 210 to cover a portion where the male screw 230 is fastened.

On the other hand, embodiments of the present invention disclosed in the specification and drawings are merely presented specific examples to aid understanding, and are not intended to limit the scope of the present invention. It is apparent to those skilled in the art that other modifications based on the technical idea of the present invention can be carried out in addition to the embodiments disclosed herein.

Therefore, according to the structure of the present invention, since the copper wire of the wire, the female thread and the male thread electrically connecting the copper wire and the insulator of the wire are protected by the insulating bushing body and the cover, it is possible to prevent the electrostatic accident due to the electric shock accident and the electric shock accident. Can be.

Claims (3)

Bushing terminals for transformers that electrically connect the insulators and wires, A bushing body of a synthetic resin having an upper surface and a lower surface opposite to the upper surface, wherein a first insertion hole is formed through a central portion of the upper surface and the lower surface, and the wire is inserted through the outer circumferential surface. A bushing body having a second insertion hole connected to the first insertion hole at an outer circumferential surface thereof so as to be inserted into the hole; A female screw inserted into the first insertion hole and fixed to the female screw, wherein the first fastening hole is formed at a predetermined depth at an upper portion thereof and the second fastening hole is formed at a predetermined depth at a lower portion thereof. A female screw having a third insertion hole in communication with the second fastening hole so that the copper wire of the electric wire can be inserted; A male screw fastened to the first fastening hole of the female screw through an upper surface of the bushing body, the male screw fixing the copper wire of the electric wire inserted into the third insertion hole through the second insertion hole; And And a cover of a synthetic resin covering the upper end of the bushing body to which the male screw is fastened. Bushing terminal for a transformer, characterized in that the insulator is fastened to the second fastening hole of the female screw exposed to the lower surface of the bushing body. Bushing terminals for transformers that electrically connect the insulators and wires, Bushing body of a synthetic resin having an upper surface and a lower surface opposite to the upper surface, the first insertion hole is formed through the central portion of the upper surface and the lower surface, the outer peripheral surface is connected to the first insertion hole A bushing body having a first fastening hole; A female screw inserted into the first insertion hole and fixed to the female screw, wherein a second insertion hole into which a copper wire of the wire can be inserted at a predetermined depth is formed at an upper portion thereof, and a female screw having a second fastening hole formed at a predetermined depth at a lower portion thereof. A female screw having a third fastening hole formed to communicate with the first fastening hole at an outer surface thereof; A male screw fastened to the third fastening hole through the first fastening hole, the male screw fixing a copper wire of the electric wire inserted into the second insertion hole of the female screw; And A cover of a synthetic resin that is inserted into a central portion and coupled to an upper end of the bushing body, the cover covering at least an outer circumferential surface portion of the bushing body to which the male screw is fastened; Bushing terminal for a transformer, characterized in that the insulator is fastened to the second fastening hole of the female screw exposed to the lower surface of the bushing body. The transformer bushing terminal according to claim 1 or 2, wherein a male thread is formed on an outer circumferential surface of the upper end of the bushing body, and a female thread is formed on an inner circumferential surface of the cover to correspond to the male thread.